package com.zzedu.framework.config;


import com.alibaba.ttl.TtlRunnable;
import com.alibaba.ttl.threadpool.TtlExecutors;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

@Configuration
@EnableAsync
public class SpringAsyncConfig {
    @Bean("busSystemExecutor")
    public Executor busSystemExecutor() {
        ThreadPoolTaskExecutor executor = MdcThreadPoolTaskExecutor.newWithInheritedMdc(8, 20, 1, TimeUnit.MINUTES, 999999);
        //配置线程池中的线程的名称前缀
        executor.setThreadNamePrefix("async-service-");
        // 设置拒绝策略：当pool已经达到max size的时候，如何处理新任务
        // CALLER_RUNS：不在新线程中执行任务，而是有调用者所在的线程来执行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        executor.setTaskDecorator(TtlRunnable::get);
        //执行初始化
        executor.initialize();
        return TtlExecutors.getTtlExecutor(executor);
    }
}